Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 40, Problem 10TYU
Summary Introduction
To explain: The advantage in the shift functions of agonist and antagonist in skeletal muscles.
Introduction: Skeletal muscles are responsible for the production of motion in the body. When a muscle contract then the bone attached to it either pulled or pushed in the motion of articulation. In vertebrates, the most abundant tissue which is found in the body is called muscle fibers. They are composed of units of muscle fibers.
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BIO168 Human Anatomy & Physiology I
Practice Worksheet B
Sequence of muscle contraction
Number the following statements in their proper sequence to describe the contraction mechanism in a skeletal muscle cell.
_____ A. Acetylcholine is released into the neuromuscular junction by the axonal terminal.
_____ B. The action potential, carried deep into the cell, causes the sarcoplasmic reticulum to release calcium ions.
____ C. The muscle cell relaxes and lengthens.
_____ D. Acetylcholine diffuses across the neuromuscular junction and binds to receptors on the sarcolemma.
____ E. The calcium ion concentration at the myofilaments increases; the myofilaments slide past one another, and the cell shortens.
_____ F. Depolarization occurs, and the action potential is generated.
_____ G. As calcium is actively reabsorbed into the sarcoplasmic reticulum, its concentration at the myofilaments decreases.
Fil in the blanks
1.
A resting muscle fiber or neuron has an internal charge that is A. positive, B. negative, or C. neutral compared to the extracellular environment. This resting membrane charge is maintained by the A. calcium ion channels, B. sodium voltage gates, C. potassium voltage gates, or D. sodium/potassium pumps? .
When a muscle fiber is at resting membrane potential there is a(an) "higher", "equal", OR "lower" concentration of sodium inside the cell compared to outside the cell and a(an) "higher", "lower", OR "equal" concentration of potassium inside the cell compared to outside.
Chapter 40 Solutions
Biology (MindTap Course List)
Ch. 40.1 - Compare the functions of the epithelial coverings...Ch. 40.1 - Prob. 2LOCh. 40.1 - Prob. 1CCh. 40.1 - Prob. 2CCh. 40.1 - Prob. 3CCh. 40.1 - Prob. 4CCh. 40.2 - Compare the structure and functions of different...Ch. 40.2 - Describe the main divisions of the vertebrate...Ch. 40.2 - Prob. 5LOCh. 40.2 - Prob. 6LO
Ch. 40.2 - Prob. 1CCh. 40.2 - Prob. 2CCh. 40.2 - Prob. 3CCh. 40.2 - Prob. 4CCh. 40.3 - Prob. 7LOCh. 40.3 - Prob. 8LOCh. 40.3 - Prob. 9LOCh. 40.3 - Compare the roles of glycogen, creatine phosphate,...Ch. 40.3 - Compare the structures and functions of the three...Ch. 40.3 - Prob. 12LOCh. 40.3 - Prob. 1CCh. 40.3 - Prob. 2CCh. 40.3 - Prob. 3CCh. 40.3 - Prob. 4CCh. 40 - Prob. 1TYUCh. 40 - Prob. 2TYUCh. 40 - Test Your Understanding 3. An energy storage...Ch. 40 - Prob. 4TYUCh. 40 - Prob. 5TYUCh. 40 - Prob. 6TYUCh. 40 - Prob. 7TYUCh. 40 - Prob. 8TYUCh. 40 - Evaluate and Synthesize 9. INTERPRET DATA Examine...Ch. 40 - Prob. 10TYUCh. 40 - Prob. 11TYUCh. 40 - Prob. 12TYUCh. 40 - Prob. 13TYUCh. 40 - Prob. 14TYU
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